变形能对奥氏体相变临界核胚尺寸的影响  

INFLUENCE OF DEFORMATION STORE ENERGY ON CRITICAL NUCLEUS RADIUS INγ TOαTRANSFORMATION

作　　者：贠冰[1] 杨才富[1] 潘灏[1] 苏航[1] 沈俊昶[1] 

机构地区：[1]钢铁研究总院

出　　处：《钢铁研究》2001年第1期36-38,共3页Research on Iron and Steel

基　　金：国家重点基础研究!(973 )资助项目

摘　　要：针对利用变形诱导铁素体相变来细化晶粒这一材料研究领域的新方向 ,基于热力学原理 ,考虑变形诱导相变因素时 ,对奥氏体—铁素体相变在不同条件下形核的临界核胚尺寸进行了模拟计算 ,从相变时形核这一角度对变形诱导的铁素体相变进行了分析 ,比较了变形存储能对临界核胚尺寸的影响。计算表明 ,变形能的加入可以使临界核胚减小 。In light of the new tendency in the field of material research i.e grain refinement by way of strain induced transformation of γ→α, calculation of the radius of critical nucleus is performed on the basis of the dynamic principles. Simulated computation of the grain size as well as analysis of the influence of the deformation store energy on the critical nucleus are carried out. Results show that the critical nucleus will be reduced and the initial transformation temperature of ferrite improved with increase of the deformation store energy.

关 键 词：临界核胚 奥氏体相变 形变诱导铁素体相变 

分 类 号：TG156.93[金属学及工艺—热处理]